IPv4 R&E Routing Table Report 21:35 GMT Fri 10 Apr, 2026 IPv4 BGP Table (Global) as seen at USP. Report Website: https://bgp.nsrc.org/REN Detailed Analysis: https://bgp.nsrc.org/REN/USP/ Analysis Summary ---------------- BGP routing table entries examined: 1039133 Prefixes after maximum aggregation (per Origin AS): 399143 Deaggregation factor: 2.60 Unique aggregates announced (without unneeded subnets): 513367 Number of IPv4 prefixes with a valid ROA: 629994 Number of IPv4 prefixes with an invalid ROA: 137 Number of IPv4 prefixes with no ROA: 409002 Total ASes present in the Internet Routing Table: 78336 Prefixes per ASN: 13.27 Origin-only ASes present in the Internet Routing Table: 67072 Origin ASes announcing only one prefix: 27391 Transit ASes present in the Internet Routing Table: 11264 Transit-only ASes present in the Internet Routing Table: 577 Paths with bogon ASNs present in the IPv4 Routing Table: 284 Average AS path length visible in the Internet Routing Table: 5.3 Max AS path length visible: 69 Max AS path prepend of ASN (269326) 61 Prefixes from unregistered ASNs in the Routing Table: 1098 Number of instances of unregistered ASNs: 1128 Number of 32-bit ASNs allocated by the RIRs: 49253 Number of 32-bit ASNs visible in the Routing Table: 40342 Prefixes from 32-bit ASNs in the Routing Table: 226952 Number of bogon 32-bit ASNs visible in the Routing Table: 84 Special use prefixes present in the Routing Table: 0 Prefixes being announced from unallocated address space: 420 Number of addresses announced to Internet: 3107377408 Equivalent to 185 /8s, 54 /16s and 209 /24s Percentage of available address space announced: 83.9 Percentage of allocated address space announced: 83.9 Percentage of available address space allocated: 100.0 Percentage of address space in use by end-sites: 99.6 Total number of prefixes smaller than registry allocations: 338495 APNIC Region Analysis Summary ----------------------------- Prefixes being announced by APNIC Region ASes: 282290 Total APNIC prefixes after maximum aggregation: 82414 APNIC Deaggregation factor: 3.43 Prefixes being announced from the APNIC address blocks: 269348 Unique aggregates announced from the APNIC address blocks: 107707 APNIC Region origin ASes present in the Internet Routing Table: 15163 APNIC Prefixes per ASN: 17.76 APNIC Region origin ASes announcing only one prefix: 4668 APNIC Region transit ASes present in the Internet Routing Table: 2053 Average APNIC Region AS path length visible: 5.2 Max APNIC Region AS path length visible: 38 Number of APNIC region 32-bit ASNs visible in the Routing Table: 10728 Number of APNIC addresses announced to Internet: 752929536 Equivalent to 44 /8s, 224 /16s and 203 /24s APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431 (pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319, 58368-59391, 63488-64098, 64297-64395, 131072-155961 APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8, 49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8, 106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8, 116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8, 123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8, 163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8, 203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8, 222/8, 223/8, ARIN Region Analysis Summary ---------------------------- Prefixes being announced by ARIN Region ASes: 303594 Total ARIN prefixes after maximum aggregation: 135839 ARIN Deaggregation factor: 2.23 Prefixes being announced from the ARIN address blocks: 303132 Unique aggregates announced from the ARIN address blocks: 146809 ARIN Region origin ASes present in the Internet Routing Table: 19427 ARIN Prefixes per ASN: 15.60 ARIN Region origin ASes announcing only one prefix: 7112 ARIN Region transit ASes present in the Internet Routing Table: 1978 Average ARIN Region AS path length visible: 5.0 Max ARIN Region AS path length visible: 36 Number of ARIN region 32-bit ASNs visible in the Routing Table: 5555 Number of ARIN addresses announced to Internet: 1347894528 Equivalent to 80 /8s, 87 /16s and 61 /24s ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106 (pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153 3354-4607, 4865-5119, 5632-6655, 6912-7466 7723-8191, 10240-12287, 13312-15359, 16384-17407 18432-20479, 21504-23551, 25600-26591, 26624-27647, 29696-30719, 31744-33791 35840-36863, 39936-40959, 46080-47103 53248-55295, 62464-63487, 64198-64296, 393216-404380 ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8, 12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8, 20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8, 29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8, 40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8, 54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8, 67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8, 74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8, RIPE Region Analysis Summary ---------------------------- Prefixes being announced by RIPE Region ASes: 287749 Total RIPE prefixes after maximum aggregation: 142307 RIPE Deaggregation factor: 2.02 Prefixes being announced from the RIPE address blocks: 290283 Unique aggregates announced from the RIPE address blocks: 188876 RIPE Region origin ASes present in the Internet Routing Table: 29378 RIPE Prefixes per ASN: 9.88 RIPE Region origin ASes announcing only one prefix: 12167 RIPE Region transit ASes present in the Internet Routing Table: 4044 Average RIPE Region AS path length visible: 5.4 Max RIPE Region AS path length visible: 46 Number of RIPE region 32-bit ASNs visible in the Routing Table: 13263 Number of RIPE addresses announced to Internet: 733111552 Equivalent to 43 /8s, 178 /16s and 101 /24s RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614 (pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631 6656-6911, 8192-9215, 12288-13311, 15360-16383 20480-21503, 24576-25599, 28672-29695 30720-31743, 33792-35839, 38912-39935 40960-45055, 47104-52223, 56320-58367 59392-61439, 61952-62463, 64396-64495 196608-216475 RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8, 53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8, 81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8, 88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8, 95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8, 217/8, LACNIC Region Analysis Summary ------------------------------ Prefixes being announced by LACNIC Region ASes: 127525 Total LACNIC prefixes after maximum aggregation: 30880 LACNIC Deaggregation factor: 4.13 Prefixes being announced from the LACNIC address blocks: 122669 Unique aggregates announced from the LACNIC address blocks: 50281 LACNIC Region origin ASes present in the Internet Routing Table: 11392 LACNIC Prefixes per ASN: 10.77 LACNIC Region origin ASes announcing only one prefix: 2711 LACNIC Region transit ASes present in the Internet Routing Table: 2607 Average LACNIC Region AS path length visible: 6.2 Max LACNIC Region AS path length visible: 69 Number of LACNIC region 32-bit ASNs visible in the Routing Table: 9418 Number of LACNIC addresses announced to Internet: 169856256 Equivalent to 10 /8s, 31 /16s and 205 /24s LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247, 61440-61951, 64099-64197, 262144-275868 + ERX transfers LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8, 191/8, 200/8, 201/8, AfriNIC Region Analysis Summary ------------------------------- Prefixes being announced by AfriNIC Region ASes: 36877 Total AfriNIC prefixes after maximum aggregation: 7004 AfriNIC Deaggregation factor: 5.27 Prefixes being announced from the AfriNIC address blocks: 53280 Unique aggregates announced from the AfriNIC address blocks: 19334 AfriNIC Region origin ASes present in the Internet Routing Table: 2014 AfriNIC Prefixes per ASN: 26.45 AfriNIC Region origin ASes announcing only one prefix: 733 AfriNIC Region transit ASes present in the Internet Routing Table: 387 Average AfriNIC Region AS path length visible: 6.1 Max AfriNIC Region AS path length visible: 63 Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1378 Number of AfriNIC addresses announced to Internet: 103390720 Equivalent to 6 /8s, 41 /16s and 158 /24s AfriNIC AS Blocks 36864-37887, 327680-330751 & ERX transfers AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8, APNIC Region per AS prefix count summary ---------------------------------------- ASN No of nets /20 equiv MaxAgg Description 9808 13821 8729 119 CHINAMOBILE-CN China Mobile Communication 7545 5916 828 499 TPG-INTERNET-AP TPG Telecom Limited, AU 9498 4903 550 327 BBIL-AP BHARTI Airtel Ltd., IN 18403 4561 347 25 FPT-AS-AP FPT Telecom Company, VN 7552 4060 1332 29 VIETEL-AS-AP Viettel Group, VN 7713 3667 1044 65 TELKOMNET-AS-AP PT Telekomunikasi Indones 56046 3487 887 177 CMNET-JIANGSU-AP China Mobile communicati 45899 3344 1868 98 VNPT-AS-VN VNPT Corp, VN 24560 3012 859 517 AIRTELBROADBAND-AS-AP Bharti Airtel Ltd., 17561 2875 181 548 LCS-AS-AP LARUS Limited, HK Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-APNIC ARIN Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14614 41274 5682 AMAZON-02 - Amazon.com, Inc., US 22773 4783 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4667 310 1034 CABLEONE - CABLE ONE, INC., US 7155 3870 286 85 VIASAT-SP-BACKBONE - ViaSat,Inc., US 6327 3718 1305 76 SHAW - Shaw Communications, CA 396982 3321 4859 494 GOOGLE-CLOUD-PLATFORM - Google LLC, US 174 3207 8764 822 COGENT-174 - Cogent Communications, LLC, 749 3140 54728 2391 DNIC-AS-00749 - United States Department 16625 2721 1221 2106 AKAMAI-AS - Akamai Technologies, Inc., US 36352 2721 222 906 AS-COLOCROSSING - HostPapa, US Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-ARIN RIPE Region per AS prefix count summary --------------------------------------- ASN No of nets /20 equiv MaxAgg Description 12479 7163 1711 149 UNI2-AS, ES 39891 4972 306 72 ALJAWWALSTC-AS, SA 20940 3955 3389 111 AKAMAI-ASN1, NL 9009 3830 354 2246 M247, RO 12389 3145 2318 872 ROSTELECOM-AS PJSC Rostelecom. Technical 212238 2719 197 2001 CDNEXT, GB 34984 2450 365 572 TELLCOM-AS, TR 8452 1726 1852 14 TE-AS TE-AS, EG 203020 1637 249 809 HOSTROYALE, IN 13188 1607 100 27 TRIOLAN, UA Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-RIPE LACNIC Region per AS prefix count summary ----------------------------------------- ASN No of nets /20 equiv MaxAgg Description 8151 12752 3300 620 UNINET, MX 10620 3429 450 1105 Telmex Colombia S.A., CO 13999 2447 506 345 Mega Cable, S.A. de C.V., MX 11830 1938 369 65 Instituto Costarricense de Electricidad y 11664 1436 277 34 Techtel LMDS Comunicaciones Interactivas 28573 1373 2431 268 Claro NXT Telecomunicacoes Ltda, BR 3816 1342 770 213 COLOMBIA TELECOMUNICACIONES S.A. ESP BIC, 6147 1245 371 22 INTEGRATEL PERU S.A.A., PE 26615 1066 2392 101 TIM SA, BR 22884 1053 71 362 TOTAL PLAY TELECOMUNICACIONES SA DE CV, M Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-LACNIC AfriNIC Region per AS prefix count summary ------------------------------------------ ASN No of nets /20 equiv MaxAgg Description 24835 2025 648 34 RAYA-AS, EG 36992 1859 1532 341 ETISALAT-MISR, EG 24863 1291 389 16 LINKdotNET-AS, EG 36935 1242 523 45 Vodafone-, EG 36903 1232 555 98 MT-MPLS, MA 37069 1116 1100 11 MOBINIL, EG 29571 1071 78 19 ORANGE-COTE-IVOIRE, CI 20011 589 155 220 NTT-DATA-Inc, ZA 36914 551 82 3 KENET-AS, KE 15399 549 57 61 WANANCHI-, KE Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet-AFRINIC Global Per AS prefix count summary ---------------------------------- ASN No of nets /20 equiv MaxAgg Description 16509 14614 41274 5682 AMAZON-02 - Amazon.com, Inc., US 9808 13821 8729 119 CHINAMOBILE-CN China Mobile Communication 8151 12752 3300 620 UNINET, MX 12479 7163 1711 149 UNI2-AS, ES 7545 5916 828 499 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 306 72 ALJAWWALSTC-AS, SA 9498 4903 550 327 BBIL-AP BHARTI Airtel Ltd., IN 22773 4783 3117 366 ASN-CXA-ALL-CCI-22773-RDC - Cox Communica 11492 4667 310 1034 CABLEONE - CABLE ONE, INC., US 18403 4561 347 25 FPT-AS-AP FPT Telecom Company, VN Complete listing at https://bgp.nsrc.org/REN/USP/data-ASnet Global Per AS Maximum Aggregation summary ----------------------------------------- ASN No of nets Net Savings Description 9808 13821 13702 CHINAMOBILE-CN China Mobile Communications Grou 8151 12752 12132 UNINET, MX 12479 7163 7014 UNI2-AS, ES 7545 5916 5417 TPG-INTERNET-AP TPG Telecom Limited, AU 39891 4972 4900 ALJAWWALSTC-AS, SA 9498 4903 4576 BBIL-AP BHARTI Airtel Ltd., IN 18403 4561 4536 FPT-AS-AP FPT Telecom Company, VN 22773 4783 4417 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications 7552 4060 4031 VIETEL-AS-AP Viettel Group, VN 20940 3955 3844 AKAMAI-ASN1, NL Complete listing at https://bgp.nsrc.org/REN/USP/data-CIDRnet List of Unregistered Origin ASNs (Global) ----------------------------------------- Bad AS Designation Net Originated Transit AS Transit AS Name 393266 UNALLOCATED 8.23.52.0/24 46887 CROWNCASTLE-AS46887 - C 395729 UNALLOCATED 8.28.58.0/24 32787 PROLEXIC-TECHNOLOGIES-D 395729 UNALLOCATED 8.28.60.0/24 32787 PROLEXIC-TECHNOLOGIES-D 396894 UNALLOCATED 8.28.201.0/24 3356 LEVEL3 - Level 3 Parent 394936 UNALLOCATED 8.33.224.0/24 22442 HOU-PHONOSCOPE - Phonos 395195 UNALLOCATED 8.38.115.0/24 3356 LEVEL3 - Level 3 Parent 1782 UNALLOCATED 8.42.19.0/24 3356 LEVEL3 - Level 3 Parent 13342 UNALLOCATED 12.17.5.0/24 174 COGENT-174 - Cogent Com 26345 UNALLOCATED 12.21.93.0/24 40264 TWC-40264-WI-MN-UPPERMI 396831 UNALLOCATED 12.23.198.0/24 7018 ATT-INTERNET4 - AT&T En Complete listing at https://bgp.nsrc.org/REN/USP/data-badAS Advertised Unallocated Addresses -------------------------------- Unassigned Network ASN Information AS Name 23.137.48.0/24 Origin: 16904 ARVIG-16904 - Arvig Enterprises Inc., US 23.137.48.0/24 Transit: 174 COGENT-174 - Cogent Communications, LLC, 23.137.200.0/24 Origin: 16276 OVH, FR 23.137.200.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res 23.140.216.0/24 Origin: 27176 DATAWAGON - DataWagon LLC, US 23.140.216.0/24 Transit: 20278 NEXEON - Nexeon Technologies, Inc., US 23.141.0.0/24 Origin: 395350 RESERVED, ZZ 23.141.0.0/24 Transit: 11426 TWC-11426-CAROLINAS - Charter Communicat 23.142.24.0/24 Origin: 62164 HEYMMAN-2, CA 23.142.24.0/24 Transit: 64236 UNREAL-SERVERS - UnReal Servers, LLC, US Complete listing at https://bgp.nsrc.org/REN/USP/data-add-IANA Number of prefixes announced per prefix length (Global) ------------------------------------------------------- !!Default route being announced!! /1:0 /2:0 /3:0 /4:0 /5:0 /6:0 /7:0 /8:16 /9:14 /10:40 /11:95 /12:297 /13:584 /14:1191 /15:2111 /16:13611 /17:8297 /18:13338 /19:25479 /20:45796 /21:52353 /22:113645 /23:107235 /24:655030 /25:0 /26:0 /27:0 /28:0 /29:0 /30:0 /31:0 /32:0 Advertised prefixes smaller than registry allocations ----------------------------------------------------- ASN No of nets Total ann. Description 8151 6942 12752 UNINET, MX 12479 6106 7163 UNI2-AS, ES 39891 3656 4972 ALJAWWALSTC-AS, SA 11492 3528 4667 CABLEONE - CABLE ONE, INC., US 6327 3500 3718 SHAW - Shaw Communications, CA 22773 3055 4783 ASN-CXA-ALL-CCI-22773-RDC - Cox Communications Inc., US 7155 2824 3870 VIASAT-SP-BACKBONE - ViaSat,Inc., US 16509 2627 14614 AMAZON-02 - Amazon.com, Inc., US 30036 2326 2674 MEDIACOM-ENTERPRISE-BUSINESS - Mediacom Communications Corp, US 10620 2233 3429 Telmex Colombia S.A., CO Complete listing at https://bgp.nsrc.org/REN/USP/data-sXXas-nos Number of /24s announced per /8 block (Global) ---------------------------------------------- 1:2496 2:1842 3:994 4:5 5:5104 6:197 7:6 8:1489 9:39 11:172 12:1186 13:685 14:2683 15:458 16:172 17:422 18:916 20:602 21:4 22:188 23:8214 24:2774 25:2 27:2820 28:1 29:19 31:3469 32:36 34:87 35:284 36:4661 37:4452 38:10093 39:1281 40:422 41:4540 42:2172 43:3051 44:449 45:19752 46:4864 47:408 48:125 49:2229 50:2018 51:626 52:1307 54:278 55:1118 56:11 57:324 58:2344 59:1376 60:1174 61:3129 62:3124 63:1724 64:6305 65:2131 66:6080 67:3263 68:1495 69:4208 70:1054 71:621 72:3173 74:3024 75:1490 76:588 77:2921 78:1966 79:1792 80:2351 81:2212 82:4052 83:1449 84:2145 85:3799 86:1091 87:2347 88:1346 89:4703 90:781 91:8428 92:2824 93:3016 94:4361 95:4653 96:1455 97:315 98:943 99:808 100:68 101:1461 102:4481 103:32458 104:5359 105:816 106:912 107:2876 108:1231 109:4219 110:2294 111:4110 112:3159 113:1958 114:2255 115:2333 116:2157 117:3503 118:3000 119:2084 120:2700 121:1557 122:2995 123:2285 124:1657 125:2974 126:125 128:1622 129:976 130:1641 131:2473 132:830 133:475 134:1665 135:611 136:1610 137:1548 138:3313 139:1642 140:1765 141:1728 142:2527 143:2121 144:1736 145:646 146:2212 147:2205 148:2764 149:3101 150:1362 151:2798 152:2317 153:1384 154:9546 155:2287 156:4456 157:2298 158:1532 159:2858 160:3812 161:1961 162:4039 163:2500 164:2040 165:2634 166:1266 167:2300 168:4018 169:854 170:5555 171:1125 172:4585 173:3482 174:881 175:1363 176:3868 177:4857 178:4362 179:2306 180:3020 181:4522 182:4014 183:2836 184:2020 185:21820 186:5755 187:4931 188:4597 189:4486 190:9830 191:1566 192:11487 193:9613 194:7868 195:5820 196:3345 197:3244 198:6292 199:6067 200:8196 201:6380 202:10709 203:10662 204:4804 205:3752 206:4558 207:3981 208:4389 209:5450 210:4759 211:2683 212:5031 213:4131 214:1042 215:47 216:7285 217:3577 218:1701 219:414 220:2199 221:1310 222:938 223:3407 End of report